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Finding the Fourth Proportional to 70,666.76, 97,509.70 and 40,447.24

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Solution

The fourth proportional to 70,666.76, 97,509.70 and 40,447.24 is: 55,811.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,666.76 : 97,509.70 = 40,447.24 : x
  2. Step 2: Convert to fraction form
    70,666.76/97,509.70 = 40,447.24/x
  3. Step 3: Cross multiply
    70,666.76x = 97,509.70 × 40,447.24
  4. Step 4: Simplify right side
    70,666.76x = 3,943,998,238.23
  5. Step 5: Solve for x
    x = 3,943,998,238.23/70,666.76
  6. Step 6: Final answer
    x = 55,811.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.